1. Design of a fiber-collimated array for beam combining
- Author
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Jérôme Primot, Thomas Bouvet, Bruno Toulon, Lionel Quetel, Arnaud Brignon, Stephan Megtert, Cindy Bellanger, Faycal Bouamrane, Tristan Allain, ONERA - The French Aerospace Lab [Palaiseau], ONERA-Université Paris Saclay (COmUE), Thales Research and Technology [Palaiseau], THALES, ONERA - The French Aerospace Lab [Châtillon], Unité mixte de physique CNRS/Thales (UMPhy CNRS/THALES), Centre National de la Recherche Scientifique (CNRS)-THALES, IDIL Fibres Optiques, and PME
- Subjects
Materials science ,Optical engineering ,02 engineering and technology ,01 natural sciences ,Collimated light ,[SPI.AUTO]Engineering Sciences [physics]/Automatic ,010309 optics ,020210 optoelectronics & photonics ,Optics ,Fiber laser ,0103 physical sciences ,0202 electrical engineering, electronic engineering, information engineering ,Fiber ,Microlens ,COLLIMATED FIBER ARRAY ,business.industry ,BEAM COMBINING ,General Engineering ,Atomic and Molecular Physics, and Optics ,FIBER LASERS ,[SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic ,Optoelectronics ,Laser beam quality ,business ,Phase modulation ,Beam (structure) - Abstract
International audience; In this paper, we present the design of a very precise collimated fiber array that meets requirements for beam combining. Calculations permit to determine the tolerances toward key parameters and specify the components to manufacture. Thus, the collimated fiber array is composed of a high quality commercial microlens array and an especially dedicated fiber holder that we design and realize experimentally. Manufacture techniques for both the microlens and the holder are chosen to be collective and then compatible with a high number of fibers. With the collimated fiber array hence obtained, the individual beam quality was measured to be λ/10 and the pointing accuracy is under 0.6 mrad.
- Published
- 2015